Answer:
I believe the answer Electrocardiogram
Explanation:
It measure the activity of the heart.
You must consider if you are putting yourself in danger by assisting them and the information you should provide first is where you are located what you seen happen you should ask them if you should do anything to help ?
It can be many things
but i think DNA
Answer:
The student identified the microorganism as a virus, which cannot be seen under a microscope.
Explanation:
